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Homework Help: Force of wire in a magnetic field

  1. Mar 3, 2009 #1
    1. The problem statement, all variables and given/known data

    A wire with a current of 2.97 A is at an angle of 37.4° relative to a magnetic field of 0.889 T. Calculate the force exerted on a 2.40 m length of the wire.

    2. Relevant equations

    F= ILBsin(theta)

    3. The attempt at a solution

    I'm under the impression that the problem gives me all the information i need, so:

    F - The force I need to find
    I - The given current 2.97A
    L - Length of wire - 2.4m
    B - .889T
    sin(37.4) = -.2948 (Could my mistake be here?)

    I multiply all of these values together (2.97A)(2.4m)(.889T)(-.2948) and i get = -1.867N, which isn't correct.... any suggestions?
  2. jcsd
  3. Mar 4, 2009 #2

    Chi Meson

    User Avatar
    Science Advisor
    Homework Helper

    Your calculator is in radian mode. That's all.
  4. Mar 4, 2009 #3
    Thanks very much, problem solved!
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